ERROR ConnServer GetFile exception: AttributeError: 'NoneType' object has no attribute 'write' in core/src/File/FileRequest.py line 250 > ... > lib/gevent/_ssl3.py line 436

### Step 1: Please describe your environment

* ZeroNet version: 4478
* Operating system: W10
* Web browser: FF
* Tor status: error
* Opened port: closed

### Step 2: Describe the problem:

ZeroHello shows the error on the WARNINGS: 1 on the top button , i click to see some error which i click and in the log i see:

ERROR ConnServer GetFile exception: AttributeError: 'NoneType' object has no attribute 'write' in core/src/File/FileRequest.py line 250 > ... > lib/gevent/_ssl3.py line 436

My ZeroHello newsfeed is not loading and ZeroBlog post submission does not respond (button indicate loading, but not saved)

Reproduce the failure in the reported Windows 10 environment, noting the Tor error and closed port. Start at core/src/File/FileRequest.py line 250 and trace ConnServer GetFile through lib/gevent/_ssl3.py line 436. Done means the exception no longer occurs and ZeroHello newsfeed loading and ZeroBlog post submission respond successfully.

索引モデルが issue の本文から書いたものです。